arrays - Functions and Objects in Javascript -

write function 'transformfirstandlast' takes in array, , returns object with: 1) first element of array object's key, , 2) last element of array key's value.

example input: ['queen', 'elizabeth', 'of hearts', 'beyonce'],

function's return value (output): { queen : 'beyonce' } note input array may have varying number of elements. code should flexibly accommodate that.

e.g. should handle input like: ['kevin', 'bacon', 'love', 'hart', 'costner', 'spacey']

here code wrote:

function transformfirstandlast(array) {   var arraylist = ['queen', 'elizabeth', 'of hearts', 'beyonce'];   var arraylist2 = ['kevin', 'bacon', 'love', 'hart', 'costner', 'spacey']   var myobject = {};       key = arraylist.shift();       value = arraylist.pop();       myobject[key] = value   var myobj2 = {};       key = arraylist2.shift();       value = arraylist2.pop();       myobj2[key] = value;   console.log(myobject);   console.log(myobj2); } transformfirstandlast(); 

the output this:

{ queen: 'beyonce' } { kevin: 'spacey' } => undefined 

i know supposed have return statement, not use 2 arrays 2 objects within 1 function, anyways, not know if doing totally wrong or pretty close find solution, please explain why getting "undefined" message on third line on output screen? thanks!

just used array indexes value , create objects.

function transformfirstandlast(array) {      var myobject = {};      myobject[array[0]] = array[array.length-1];      return myobject;  }      var arraylist = ['queen', 'elizabeth', 'of hearts', 'beyonce'];    var arraylist2 = ['kevin', 'bacon', 'love', 'hart', 'costner', 'spacey']        console.log(transformfirstandlast(arraylist));    console.log(transformfirstandlast(arraylist2));